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This post was updated on .
Executive summary, intermittent connections in a trap vertical caused the ALC to go crazy.
I suddenly had bizarre behavior when adjusting my mike level for JT65.
When trying to get the ALC to be 4 bars it was all over the place.
It was flickering on and off and sometimes the tones were modulate at a rhythmical rate.
Power level was pretty constant.
I thought it might be RF getting back into the shack or the PC picking up RF or bizarre driver behavior.
I thought it might have something to with the new inverted V antenna causing RF to get back in the shack.
None of this was the problem.
The R3 Vertical was doing.
It's been up for a very long time and when I switch to the new antenna all the problems go away.
Larry Lopez N2CVS.
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